← Power for robots lesson New set →

Robotics Worksheet: Robot Batteries

Robotics lesson 4: Power for robots · Set 118 · 40 questions
TalentJR

Robot tip (Holds ÷ uses): Hours = capacity in mAh ÷ current in mA (2000 mAh ÷ 500 mA = 4 hours). Percent: blocks = 100% ÷ % used per block; time = blocks × minutes per block. Cells in series add up: 4 cells of 1.5 V give 6 V.

NameDateTime takenScore ___ / 40
  1. 1.🔋 A robot runs on 7 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  2. 2.🔋 A robot arm bolted to a factory floor usually gets its power from … (a) a solar panel (b) a power cable (c) a coin cell (d) a wind-up key
  3. 3.🔋 A robot runs on 2 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  4. 4.🔋 What does a robot vacuum do when its battery is low? (a) explodes (b) turns into a car (c) goes back to its dock (d) keeps going for ever
  5. 5.🔋 A robot’s battery is at 5% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  6. 6.🔋 A robot’s battery is at 40% and charging adds 5% every 10 minutes. How many minutes until it is full (100%)?
  7. 7.🔋 A robot’s battery holds 1000 mAh and the robot uses 200 mA. For how many hours can it run?
  8. 8.🔋 A robot uses 2% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  9. 9.🔋 What should you do with a swollen or damaged robot battery? (a) throw it in a fire (b) charge it again (c) give it to an adult (d) squeeze it flat
  10. 10.🔋 A robot uses 20% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  11. 11.🔋 A robot uses 5% of its battery every 5 minutes. How many minutes does a full battery (100%) last?
  12. 12.🔋 A robot’s battery holds 1600 mAh and the robot uses 200 mA. For how many hours can it run?
  13. 13.🔋 A robot’s battery holds 500 mAh and the robot uses 250 mA. For how many hours can it run?
  14. 14.🔋 A robot’s battery is at 75%. Each lap of the track uses 25%. How many laps can it do before the battery reaches 0%?
  15. 15.🔋 Battery capacity (how much it holds) is often written in … (a) mAh (b) km (c) °C (d) kg
  16. 16.🔋 A robot’s battery holds 1000 mAh and the robot uses 500 mA. For how many hours can it run?
  17. 17.🔋 A robot runs on 3 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  18. 18.🔋 Many robots on far-away planets get energy from … (a) wind-up keys (b) petrol pumps (c) sunlight (solar panels) (d) shop batteries
  19. 19.🔋 A robot’s battery is at 85%. Each lap of the track uses 5%. How many laps can it do before the battery reaches 0%?
  20. 20.🔋 A robot’s battery is at 50% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  21. 21.🔋 A robot’s battery is at 80%. Each lap of the track uses 20%. How many laps can it do before the battery reaches 0%?
  22. 22.🔋 A robot runs on 5 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  23. 23.🔋 A robot’s battery holds 1500 mAh and the robot uses 250 mA. For how many hours can it run?
  24. 24.🔋 A robot’s battery holds 100 mAh and the robot uses 100 mA. For how many hours can it run?
  25. 25.🔋 A robot uses 4% of its battery every 3 minutes. How many minutes does a full battery (100%) last?
  26. 26.🔋 A robot uses 10% of its battery every 2 minutes. How many minutes does a full battery (100%) last?
  27. 27.🔋 A robot’s battery is at 80%. Each lap of the track uses 10%. How many laps can it do before the battery reaches 0%?
  28. 28.🔋 A robot’s battery holds 400 mAh and the robot uses 100 mA. For how many hours can it run?
  29. 29.🔋 A robot’s battery is at 0% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  30. 30.🔋 A robot runs on 8 cells of 1.5 V joined in series. What is the total voltage (in volts)? =
  31. 31.🔋 What powers most moving robots? (a) a candle (b) a tiny magnet (c) a rechargeable battery (d) a water tank
  32. 32.🔋 A robot uses 5% of its battery every 4 minutes. How many minutes does a full battery (100%) last?
  33. 33.🔋 A robot’s battery holds 1400 mAh and the robot uses 200 mA. For how many hours can it run?
  34. 34.🔋 A robot’s battery is at 60%. Each lap of the track uses 20%. How many laps can it do before the battery reaches 0%?
  35. 35.🔋 A robot’s battery holds 5000 mAh and the robot uses 1000 mA. For how many hours can it run?
  36. 36.🔋 A robot’s battery is at 75% and charging adds 25% every 10 minutes. How many minutes until it is full (100%)?
  37. 37.🔋 A robot’s battery is at 100%. Each lap of the track uses 10%. How many laps can it do before the battery reaches 0%?
  38. 38.🔋 A robot’s battery holds 300 mAh and the robot uses 100 mA. For how many hours can it run?
  39. 39.🔋 A robot uses 25% of its battery every 6 minutes. How many minutes does a full battery (100%) last?
  40. 40.🔋 A robot’s battery holds 1200 mAh and the robot uses 200 mA. For how many hours can it run?

Answer key

  1. 10.5
  2. a power cable
  3. 3
  4. goes back to its dock
  5. 190
  6. 120
  7. 5
  8. 300
  9. give it to an adult
  10. 15
  11. 100
  12. 8
  13. 2
  14. 3
  15. mAh
  16. 2
  17. 4.5
  18. sunlight (solar panels)
  19. 17
  20. 20
  21. 4
  22. 7.5
  23. 6
  24. 1
  25. 75
  26. 20
  27. 8
  28. 4
  29. 40
  30. 12
  31. a rechargeable battery
  32. 80
  33. 7
  34. 3
  35. 5
  36. 10
  37. 10
  38. 3
  39. 24
  40. 6

Free robotics lessons, practice and worksheets at talentjr.in/robotics-for-kids